Found my oil leak. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

richards72chevy · 03-02-2013, 03:30 PM

Last few weaks my truck has been leaking oil like a sap.I was messing with the carb today and noticed oil spewing out in front of the block every time it was revved up.There was a bolt missing kind of by fuel pump area.I dont know what that bolt is for.I got a bolt from a spare engine i had laying around.I just assumed my oil pan gasket was leaking.I wish i would have a found it when it started leaking.Would have saved me about 40 bucks in oil.

GASoline71 · 03-02-2013, 03:33 PM

The old "bolt by the fuel pump oil leak" trick. Has happened to almost all of us at one point while workin' on Small Block Chevy's.

Welcome to the club.

Gary.

**70cst** · 03-02-2013, 03:40 PM

Quote:

Originally Posted by GASoline71

The old "bolt by the fuel pump oil leak" trick. Has happened to almost all of us at one point while workin' on Small Block Chevy's.

Welcome to the club.

Gary.

terry b · 03-02-2013, 04:04 PM

Well she wont rust for awile.

cdowns · 03-02-2013, 04:45 PM

DO NOT USE TOO LONG A BOLT

too long and it will hit the fuel pump drive rod and cause all sorts of fun problems

richards72chevy · 03-02-2013, 05:12 PM

I got the bolt from the same spot on a 305.Do you think they are the same?I just have to remember that the bolt is gone when i put that 305 in my 66.

67ChevyRedneck · 03-02-2013, 05:20 PM

Quote:

Originally Posted by richards72chevy

I just have to remember that the bolt is gone when i put that 305 in my 66.

You will, when it starts leaking oil everywhere

68gmsee · 03-02-2013, 05:48 PM

Yeah, that' particular oil leak has been discussed here many times. If you had posted the problem when you determined it was leaking you would have been inundated with the resolution replies.

As an fyi:. If you ever have to change the fuel pump, install a longer bolt there to hold the pump push rod in place before you remove it.

Oh, and don't forget to put some sealant on the bolt so it won't ooz oil out.

richards72chevy · 03-03-2013, 09:14 AM

I was wondering what bolt hole was for.I noticed one below it as well.

shawno72 · 03-03-2013, 09:19 AM

I'm gonna go check mine even though its not leaking

Posted via Mobile Device

shawno72 · 03-03-2013, 09:45 AM

Can you guys post a pic of the hole in question? I looked and there is a couple of holes on the front of the block that are empty but not leaking.
Posted via Mobile Device

GASoline71 · 03-03-2013, 10:43 AM

Quote:

Originally Posted by richards72chevy

I was wondering what bolt hole was for.I noticed one below it as well.

The hole below it is a blind hole. No oil will come from there.

Quote:

Originally Posted by shawno72

Can you guys post a pic of the hole in question? I looked and there is a couple of holes on the front of the block that are empty but not leaking.
Posted via Mobile Device

Here ya go...

Gary

shawno72 · 03-03-2013, 11:38 AM

Thanks guys. I just went out and put a bolt in mine.

Posted via Mobile Device

richards72chevy · 03-03-2013, 11:36 PM

Quote:

Originally Posted by shawno72

Thanks guys. I just went out and put a bolt in mine.

Posted via Mobile Device

So yours was leaking from the same spot?

shawno72 · 03-04-2013, 12:42 AM

Quote:

Originally Posted by richards72chevy

So yours was leaking from the same spot?

No but I didn't want to wait for it to start

Posted via Mobile Device

1972SUPERSB · 03-04-2013, 12:47 AM

What size bolt is this?
Posted via Mobile Device

c10derek · 03-04-2013, 12:51 AM

Quote:

Originally Posted by richards72chevy

I was wondering what bolt hole was for.I noticed one below it as well.

Older Chevys had front motor mounts that use those holes
Posted via Mobile Device

piecesparts · 03-04-2013, 03:27 AM

Make sure that bolt is a SHORT one, so that it does not butt up against the fuel pump push rod. I believe that bolt is a standard 3/8" SAE bolt, but for the need of just plugging the hole, it shold not be more that 1/2" long with some sealant on it.

Jayschevy · 03-04-2013, 08:25 AM

Quote:

Originally Posted by GASoline71

The hole below it is a blind hole. No oil will come from there.

Here ya go...

Gary

Will the hole under the one with the arrow pointing to it need a bolt as well?

midniteblues · 03-04-2013, 09:34 AM

alot of times that hole could be caked with crud and dont leak right away.

68gmsee · 03-04-2013, 10:27 AM

Quote:

Originally Posted by Jayschevy

Will the hole under the one with the arrow pointing to it need a bolt as well?

No. Post number 12 above.

03-02-2013, 03:30 PM	#1
richards72chevy Registered User Join Date: Dec 2010 Location: konawa ok/oakdale Ca. Posts: 1,651	Found my oil leak. Last few weaks my truck has been leaking oil like a sap.I was messing with the carb today and noticed oil spewing out in front of the block every time it was revved up.There was a bolt missing kind of by fuel pump area.I dont know what that bolt is for.I got a bolt from a spare engine i had laying around.I just assumed my oil pan gasket was leaking.I wish i would have a found it when it started leaking.Would have saved me about 40 bucks in oil.

03-02-2013, 04:04 PM	#4
terry b Registered User Join Date: Oct 2011 Location: jackson michigan Posts: 755	Re: Found my oil leak. Well she wont rust for awile.

03-02-2013, 04:45 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Found my oil leak. DO NOT USE TOO LONG A BOLT too long and it will hit the fuel pump drive rod and cause all sorts of fun problems __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

03-02-2013, 05:12 PM	#6
richards72chevy Registered User Join Date: Dec 2010 Location: konawa ok/oakdale Ca. Posts: 1,651	Re: Found my oil leak. I got the bolt from the same spot on a 305.Do you think they are the same?I just have to remember that the bolt is gone when i put that 305 in my 66.

03-02-2013, 05:48 PM	#8
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Found my oil leak. Yeah, that' particular oil leak has been discussed here many times. If you had posted the problem when you determined it was leaking you would have been inundated with the resolution replies. As an fyi:. If you ever have to change the fuel pump, install a longer bolt there to hold the pump push rod in place before you remove it. Oh, and don't forget to put some sealant on the bolt so it won't ooz oil out. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...

03-03-2013, 09:14 AM	#9
richards72chevy Registered User Join Date: Dec 2010 Location: konawa ok/oakdale Ca. Posts: 1,651	Re: Found my oil leak. I was wondering what bolt hole was for.I noticed one below it as well.

03-03-2013, 09:19 AM	#10
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: Found my oil leak. I'm gonna go check mine even though its not leaking Posted via Mobile Device __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

03-03-2013, 09:45 AM	#11
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: Found my oil leak. Can you guys post a pic of the hole in question? I looked and there is a couple of holes on the front of the block that are empty but not leaking. Posted via Mobile Device __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

03-03-2013, 11:38 AM	#13
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: Found my oil leak. Thanks guys. I just went out and put a bolt in mine. Posted via Mobile Device __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

03-04-2013, 12:47 AM	#16
1972SUPERSB Registered User Join Date: Sep 2012 Location: San Antonio, TX Posts: 1,026	Re: Found my oil leak. What size bolt is this? Posted via Mobile Device __________________ Jeff 1972 Cheyenne Super SWB 350, Auto, Bucket Seats w/Console, Tach, Factory A/C, P/S ,P/B, Tilt 1998 Chevy 1500 Ext Cab 5.7, Pewter w/blue interior

03-04-2013, 03:27 AM	#18
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Found my oil leak. Make sure that bolt is a SHORT one, so that it does not butt up against the fuel pump push rod. I believe that bolt is a standard 3/8" SAE bolt, but for the need of just plugging the hole, it shold not be more that 1/2" long with some sealant on it. __________________ Frank

03-04-2013, 09:34 AM	#20
midniteblues Registered User Join Date: Jul 2011 Location: strausstown pa Posts: 3,394	Re: Found my oil leak. alot of times that hole could be caked with crud and dont leak right away. __________________ 81 camaro 355 4/spd 342 posi my first love. 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover.

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